changeset 2639:3188af0e7243 web-gateway

Add TypeAdapter for serializing HeapInfo objects.
author Joshua Matsuoka <jmatsuok@redhat.com>
date Mon, 10 Apr 2017 17:14:24 -0400
parents 46881f6f5d6c
children 6041d623b60b
files plugins/vm-heap-analysis/common/pom.xml plugins/vm-heap-analysis/common/src/main/java/com/redhat/thermostat/vm/heap/analysis/common/internal/HeapInfoTypeAdapter.java plugins/vm-heap-analysis/common/src/test/java/com/redhat/thermostat/vm/heap/analysis/common/internal/HeapInfoTypeAdapterTest.java
diffstat 3 files changed, 187 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/plugins/vm-heap-analysis/common/pom.xml	Mon Apr 10 16:37:21 2017 -0400
+++ b/plugins/vm-heap-analysis/common/pom.xml	Mon Apr 10 17:14:24 2017 -0400
@@ -133,6 +133,11 @@
       <groupId>org.apache.servicemix.bundles</groupId>
       <artifactId>org.apache.servicemix.bundles.lucene-analyzers-common</artifactId>
     </dependency>
+    <dependency>
+      <groupId>com.google.code.gson</groupId>
+      <artifactId>gson</artifactId>
+      <version>${gson.version}</version>
+    </dependency>
   </dependencies>
 </project>
 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/vm-heap-analysis/common/src/main/java/com/redhat/thermostat/vm/heap/analysis/common/internal/HeapInfoTypeAdapter.java	Mon Apr 10 17:14:24 2017 -0400
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2012-2017 Red Hat, Inc.
+ *
+ * This file is part of Thermostat.
+ *
+ * Thermostat is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2, or (at your
+ * option) any later version.
+ *
+ * Thermostat is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Thermostat; see the file COPYING.  If not see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Linking this code with other modules is making a combined work
+ * based on this code.  Thus, the terms and conditions of the GNU
+ * General Public License cover the whole combination.
+ *
+ * As a special exception, the copyright holders of this code give
+ * you permission to link this code with independent modules to
+ * produce an executable, regardless of the license terms of these
+ * independent modules, and to copy and distribute the resulting
+ * executable under terms of your choice, provided that you also
+ * meet, for each linked independent module, the terms and conditions
+ * of the license of that module.  An independent module is a module
+ * which is not derived from or based on this code.  If you modify
+ * this code, you may extend this exception to your version of the
+ * library, but you are not obligated to do so.  If you do not wish
+ * to do so, delete this exception statement from your version.
+ */
+
+package com.redhat.thermostat.vm.heap.analysis.common.internal;
+
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import com.redhat.thermostat.vm.heap.analysis.common.model.HeapInfo;
+
+import com.google.gson.TypeAdapter;
+
+import java.io.IOException;
+import java.util.List;
+
+public class HeapInfoTypeAdapter extends TypeAdapter<List<HeapInfo>>{
+
+    private static final String AGENT_ID = "agentId";
+    private static final String VM_ID = "vmId";
+    private static final String TIMESTAMP = "timeStamp";
+    private static final String HEAP_ID = "heapId";
+    private static final String HEAP_DUMP_ID = "heapDumpId";
+    private static final String HISTOGRAM_ID = "histogramId";
+    private static final String TYPE_LONG = "$numberLong";
+
+    @Override
+    public void write(JsonWriter out, List<HeapInfo> infos) throws IOException {
+        out.beginArray();
+        for (HeapInfo info : infos) {
+            writeHeapInfo(out, info);
+        }
+        out.endArray();
+    }
+
+    public void writeHeapInfo(JsonWriter out, HeapInfo info) throws IOException {
+        out.beginObject();
+        out.name(AGENT_ID);
+        out.value(info.getAgentId());
+        out.name(VM_ID);
+        out.value(info.getVmId());
+        out.name(TIMESTAMP);
+        writeLong(out, info.getTimeStamp());
+        out.name(HEAP_ID);
+        out.value(info.getHeapId());
+        out.name(HEAP_DUMP_ID);
+        out.value(info.getHeapDumpId());
+        out.name(HISTOGRAM_ID);
+        out.value(info.getHistogramId());
+        out.endObject();
+    }
+
+    private void writeLong(JsonWriter out, long timestamp) throws IOException {
+        // Write MongoDB representation of a Long
+        out.beginObject();
+        out.name(TYPE_LONG);
+        out.value(String.valueOf(timestamp));
+        out.endObject();
+    }
+
+    @Override
+    public List<HeapInfo> read(JsonReader in) {
+        throw new UnsupportedOperationException();
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/vm-heap-analysis/common/src/test/java/com/redhat/thermostat/vm/heap/analysis/common/internal/HeapInfoTypeAdapterTest.java	Mon Apr 10 17:14:24 2017 -0400
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2012-2017 Red Hat, Inc.
+ *
+ * This file is part of Thermostat.
+ *
+ * Thermostat is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2, or (at your
+ * option) any later version.
+ *
+ * Thermostat is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Thermostat; see the file COPYING.  If not see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Linking this code with other modules is making a combined work
+ * based on this code.  Thus, the terms and conditions of the GNU
+ * General Public License cover the whole combination.
+ *
+ * As a special exception, the copyright holders of this code give
+ * you permission to link this code with independent modules to
+ * produce an executable, regardless of the license terms of these
+ * independent modules, and to copy and distribute the resulting
+ * executable under terms of your choice, provided that you also
+ * meet, for each linked independent module, the terms and conditions
+ * of the license of that module.  An independent module is a module
+ * which is not derived from or based on this code.  If you modify
+ * this code, you may extend this exception to your version of the
+ * library, but you are not obligated to do so.  If you do not wish
+ * to do so, delete this exception statement from your version.
+ */
+
+package com.redhat.thermostat.vm.heap.analysis.common.internal;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.reflect.TypeToken;
+import com.redhat.thermostat.vm.heap.analysis.common.model.HeapInfo;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.List;
+
+public class HeapInfoTypeAdapterTest {
+
+    @Test
+    public void testHeapInfoGetsSerializedCorrectly() {
+        GsonBuilder builder = new GsonBuilder();
+        Type list_type = new TypeToken<List<HeapInfo>>(){}.getType();
+        builder.registerTypeAdapter(list_type, new HeapInfoTypeAdapter());
+        Gson gson = builder.create();
+        List<HeapInfo> infos = new ArrayList<>();
+        HeapInfo info = new HeapInfo("1", "1", 100l);
+        info.setHeapDumpId("1234f");
+        info.setHeapId("2432a");
+        info.setHistogramId("5675n");
+        infos.add(info);
+        assertEquals("[{\"agentId\":\"1\",\"vmId\":\"1\",\"timeStamp\":{\"$numberLong\":\"100\"},\"heapId\":\"2432a\",\"heapDumpId\":\"1234f\",\"histogramId\":\"5675n\"}]", gson.toJson(infos, list_type));
+    }
+
+    @Test
+    public void testMultipleHeapInfoGetsSerializedCorrectly() {
+        GsonBuilder builder = new GsonBuilder();
+        Type list_type = new TypeToken<List<HeapInfo>>(){}.getType();
+        builder.registerTypeAdapter(list_type, new HeapInfoTypeAdapter());
+        Gson gson = builder.create();
+        List<HeapInfo> infos = new ArrayList<>();
+        HeapInfo info = new HeapInfo("1", "1", 100l);
+        info.setHeapDumpId("1234f");
+        info.setHeapId("2432a");
+        info.setHistogramId("5675n");
+        infos.add(info);
+        HeapInfo info2 = new HeapInfo("2", "2", 200l);
+        info.setHeapDumpId("21234ff");
+        info.setHeapId("22432aa");
+        info.setHistogramId("25675nn");
+        infos.add(info2);
+        assertEquals("[{\"agentId\":\"1\",\"vmId\":\"1\",\"timeStamp\":{\"$numberLong\":\"100\"},\"heapId\":\"22432aa\",\"heapDumpId\":\"21234ff\",\"histogramId\":\"25675nn\"},{\"agentId\":\"2\",\"vmId\":\"2\",\"timeStamp\":{\"$numberLong\":\"200\"}}]", gson.toJson(infos, list_type));
+    }
+}